Doctors battling record numbers of Covid-19 deaths in St. Petersburg are watching with unease as soccer fans gather for the next Euro 2020 match to be played at one of its stadiums, Reuters reports.

Russia's second city, which reported more than 100 deaths per day this week, hosts the quarter-final between Spain and Switzerland on July 2. It is the city's seventh Euro 2020 match.

Some pandemic restrictions have been imposed, including a 50 per cent limit on stadium capacity and a requirement that fans wear masks. Restaurants must stay closed between 2am and 6pm and there are caps on the number of people that can attend public events.